STAT1 and dermatitis: Previous studies have reported that transcription factors, such as the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB), signal transducer, and activator of transcription-1 (STAT-1), as well as mitogen-activated protein kinase (MAPK), play important roles in the production of cytokines and chemokines in skin inflammation [13,14,15].